For most people, taking care of a zit calls for Oxycution. But for biotech artists Oron Catts and Ionat Zurr, it's about cultivating tissue, not drying it up. Their Semi-Living Wired Zit, shown here, is grown from mouse scar tissue. The duo from Perth, Australia, creates work that blurs the line between art and science, in this and other outlandish creations for their project, Tissue Culture & Art. Catts and Zurr are now sculpting a quarter-size ear from human tissue. "We're interested in the ear as an object," explains Catts. Performance artist Stelarc wants the pair to grow a life-size version so he can have it surgically attached to his head. Vincent van Gogh, where are you when we need you?